00:01
In this problem, we're being asked to take the given equation that can help us find the surface area for a box, and we want to solve it for h, meaning we need to get h by itself on one side of the equation.
00:12
Well, i notice that h occurs in these two terms here.
00:15
So the first thing i want to do is move the term that doesn't have an h to the left -hand side.
00:20
So to move this term 2lw to the left -hand side, i'm going to subtract 2lw.
00:26
And i do that because 2lw minus 2lw is 0, so these terms.
00:30
To cancel.
00:32
Well, on the left -hand side, s -minus 2lw, those aren't late terms.
00:36
So we're going to leave that as is.
00:39
And on the right -hand side, we have 2 -w -h plus 2 -hl.
00:44
So now the fact is, well, how do we isolate h? because it's included in both terms, but they're not late terms...